21680974 Volvo.Penta Plate

Introduction
This troubleshooting guide can be an aid for the serviceman to find the cause of existing problems. Several common problems are covered in the guide, but these problems are not arranged in any particular sequence.Identify your particular type of problem from the Problem Index, then go directly to that problem in the guide. However, when you begin the procedure for that problem, start at Step 1 and follow through the step by step procedure. The steps in a particular problem provide a definite sequence to be followed for a logical, one by one elimination of many variables. These steps are arranged in order from the more probable/easiest to check, to the less probable/more complex to check.Whenever the cause of the problem is found and corrected, stop the test (as shown by word STOP). Do not continue through the complete procedure just because it is there.Problem Index
1. Engine Will Not Start (Engine Cranks But Does Not Start)*2. Engine Will Not Start (Engine Does Not Crank)*3. Engine Starts But Shutdown Occurs Immediately, Or Engine Shutdown Occurs While Still Cranking4. Starter Remains Engaged Or Continues To Run After Engine Has Started5. Engine Shutdown Occurs After Running More Than 3 Minutes6. No Engine Shutdown When A Fault Occurs*Note: Be sure that the emergency stop pushbutton (ES), the remote normal stop switch (RNSS) and engine speed switch (ESS) have been reset and/or set in the RUN position. Also check and reset all circuit breakers on the front of the J box and the enclosure group. Problem 1: Engine Cranks But Does Not Start Step 1 Test Procedure:Crank the engine and observe the action of the governor and carburetor.If a 2301 Electric Governor is used, measure the voltage supplied to the governor. Test Results:A. Carburetor and governor moves in Fuel On direction: Check the gas supply system to the carburetor. Refer to the engine portion of the Service Manual. If no problems are found, go to Step 2.B. Carburetor does not move or cannot be observed. Governor may or may not move in Fuel On direction: The problem is in the engine or in the governor system. Refer to engine portion of the Service Manual. STOP.C. 2301 Electric Governor is used and supply voltage is found to be greater than 15 volts: Problem is in governor or actuator system. Refer to 2301 Electric Governor Service Manual SENR2928. STOP.D. 2301 Electric Governor is used and the supply voltage is found to be less than 15 volts: Problem is in wiring to the 2301 Electric Governor. Go to Step 4. Step 2 Test Procedure:Remove jumper between terminals TS11 and TS28 of the terminal strip in the J box and crank the engine. Be prepared to use manual shutoff if needed. Test Results:A. Engine starts and runs: The SR1 relay was not energizing to prevent magneto voltage from grounding. Go to Step 3.B. Engine does not start: Problem is in ignition system. Refer to engine portion of the Service Manual. STOP. Step 3 Test Procedure:Reinstall jumper wire between terminals TS11 and TS28 that was disconnected in Step 2. Connect a jumper wire (in the J box) between terminals TS14 and TS24 of the terminal strip. Now crank the engine, but be prepared to use manual shutoff if needed. Test Results:A. Engine starts and runs: The SR1 relay is not defective. Remove jumper between terminals TS14 and TS24. Go to Step 6.B. Engine does not start: The SR1 normally closed contact stays closed and is grounding magneto voltage. Replace the SR1 (see Procedure H) or repair any wiring problem. STOP. Step 4 Test Procedure:Check for presence of jumper wire between terminals TS14 and TS31 in the J box. Test Results:A. Jumper present: Go to Step 5.B. Jumper absent: Install jumper. Problem solved. STOP. Step 5 Test Procedure:Install jumper wire between J box terminals TS24 and TS31. Crank engine, but be prepared to use manual shutoff if necessary. Test Results:A. Engine starts: Remove jumper and go to Step 6.B. Engine does not start: Problem is in the governor or actuator system. Refer to 2301 Electric Governor Service Manual SENR2928. STOP. Step 6 Test Procedure:Connect a jumper between terminals TS9 and TS14 in the J box. Be sure that the emergency stop switch (ES) has been reset, and that the start-stop switch (SSS) and remote normal stop switch (RNSS) are in the RUN position. Crank the engine. For this test to be valid, oil pressure must be indicated when engine is cranked. Test Results:A. One of the switches was in the STOP position: Problem has been solved. Disconnect the jumper across TS9 and TS14.B. Engine starts and runs: Problem is in the oil pressure switch OPS1. If the electronic speed switch (ESS) is equipped with oil step function, the problem may also be in the oil pressure switch OPS2 or the ESS. Go to Step 7.C. Engine does not start: Problem is not in oil pressure switches or in oil step pressure part of the electronic speed switch (ESS). Go to Step 8. Step 7 Test Procedure:Disconnect jumper wire that had been installed between terminals TS9 and TS14 in the J box while performing Step 6. Connect jumper wires across terminals 1 and 2 of oil pressure switches OPS1 and, if provided, OPS2 (one switch at a time) and start the engine. Run engine at low idle speed. For this test to be valid, oil pressure must be indicated when engine is cranked and started. Test Results:A. The engine starts and runs when OPS1 is jumpered: Replace the OPS1 switch (see Procedure G). STOP.B. Engine does not start and run at low idle: On engines equipped with oil step monitoring on the electronic speed switch (ESS), the ESS is defective (normally closed OPSS contacts are open). Check ESS (see Procedure D) and, if necessary, replace ESS or correct wiring problems. On all engines, also check start-stop switch terminals SSS-10 and SSS-11. They may not be making contact in the START position. STOP.C. The engine starts and runs when OPS2 is